How to Reset the Counter to Zero from Gridview in asp.net

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How to reset the counter to zero in ASP.NET?

Dear Friends,

I have a ASP.NET button with the name RESET and a grid view below this button.
When I click on this reset button it should clear one column in the grid and it should set all the numbers to 0 (Zero).

In my database I have table called Linkcounter with fields as Counter and Links.
For example: this is my database table

Counter  Links
12       Home
15       About Us
12       Our Services
3        Contact Us

When I click on the reset button the counter values should reset to 0 (Zero).

Please help.

This is my code:

C#

protected void Page_Load(object sender, EventArgs e)
    {

        if (!IsPostBack)
        {
            LoadGridCounterData();
        }

    }


    private void LoadGridCounterData()
    {
        SqlConnection con = new SqlConnection(_connString);
       
        
        SqlCommand cmd = new SqlCommand("Select Counter,link from linkcounter", con);
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        da.Fill(ds);
        GVCounter.DataSource = ds;
        GVCounter.DataBind();
    }

This is code am facing problem (reset button code):

C#

protected void ResetImgBtn_Click(object sender, ImageClickEventArgs e)
    {
        SqlConnection con = new SqlConnection(_connString);

        SqlCommand cmd = new SqlCommand();
        DataSet ds = new DataSet();
       cmd.CommandText = "Update LinkCounter Set Counter=0";
       
        cmd.Connection = con;
        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
        GVCounter.DataSource = ds;
     // GVCounter.DataBind();

        ScriptManager.RegisterStartupScript(this, this.GetType(), "RunCode", "javascript:alert('Successfully Counters Reset to Zero');", true);
    }

Posted 30-Dec-12 20:44pm

Software Engineer 892

Updated 6-Jun-23 5:01am

André Kraak

v3

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Christian Graus · Answer 1 · 2012-12-30T20:50:00

Solution 1

You are loading the data in page load. The event fires AFTER page load. Load the data in prerender, which fires AFTER the button, and it will work fine.

Posted 30-Dec-12 20:50pm

Christian Graus

Comments

Software Engineer 892 31-Dec-12 2:57am

no, its not working. if i put page load code in prerender Gridview is not displaying.
and if i put the pageload code both in prerender and pageload...then also its not working..Please help am fresher

Christian Graus 31-Dec-12 14:07pm

I suggest you stop using the word 'fresher'. It has no meaning in English. On this site, it tends to mean 'I am a non programmer, being paid to write code. I took your job away through outsourcing and now I want you to do the work for me'. My advice is correct. However, as it is a postback, you need to reload your data ( because you changed it ). Get rid of the 'IsPostback' check, and in general, read a book on ASP.NET and try to UNDERSTAND what your code does, instead of copying it blindly off the web. Also, learn to use the debugger, it would have shown you what is happening, in every step of this process.

Software Engineer 892 31-Dec-12 3:34am

anybody there , please solve.

adriancs · Answer 2 · 2023-06-06T05:01:00

Solution 83

C#

protected void ResetImgBtn_Click(object sender, ImageClickEventArgs e)
{
    // ...
    // do the reset counter to zero
    // ...
    
    // Refresh the GridView
    LoadGridCounterData();
}

Posted 6-Jun-23 5:01am

adriancs

Comments

Richard Deeming 6-Jun-23 11:52am

I'm guessing the OP isn't still looking for an answer 10½ years later. :)

adriancs 6-Jun-23 21:15pm

yeah, I'm not aware that this question is already 10+ years old. by the way, @AndréKraak why did you update a question of 10 years old :)

Richard Deeming 7-Jun-23 3:41am

That's a known bug; if you look at the version history[^], you'll see that André updated the question back in December 2012.

The "updated" timestamp shows the last update for a question or any solution, including already-deleted spam solutions.

And since yours is solution #83, there have been 81 spam solutions to this question deleted over the years. :)

adriancs 7-Jun-23 5:04am

Cool. Thanks for the info, Richard :D